With that recipe, we are staying in the Mediterranean style of cooking. Pasta is going to be served with eggplants and zucchinis. Good summer smell should embalm your kitchen.
Put the instant pot in mode browning
Brown the eggplant 5min
Add the zucchinis and brown 5min more
Add the pasta and water
Salt
Switch the instant pot to pressure cooking 5min
At the end of cooking, empty the water if necessary
Serve in a plate with parmesan cheese
Servings 4